.main-frame{
    height: 100%;
}

.left-nav{
    color: white;
}

.header{
    color: black;
    height: 80px;
    background: white;
    padding: 0px;
}

.content-frame{
    background: #f0f2f5;
}

.footer{
    text-align: center;
    color: rgba(0, 0, 0, .5);
    background: #f0f2f5;
}